POSIX message queue does not exist?

POSIX message queue does not exist?

[Joshua Kurland]

How can I enable POSIX message queues for the imx6 wandboard-quad
kernel?  Do I need to add something to my recipe, or is their a
setting in the kernel menuconfig?  My current kernel version is
3.0.35-4.0.0-wandboard+g929768a.

Thanks for the help

Re: POSIX message queue does not exist?

[Otavio Salvador]

On Fri, Oct 11, 2013 at 3:13 PM, Joshua Kurland
<joshua.kurland@adtecdigital.net> wrote:
> How can I enable POSIX message queues for the imx6 wandboard-quad
> kernel?  Do I need to add something to my recipe, or is their a
> setting in the kernel menuconfig?  My current kernel version is
> 3.0.35-4.0.0-wandboard+g929768a.

It seems you need to research a bit about the Linux build/config.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: POSIX message queue does not exist?

[Krakora Randy-B37740]

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  1.  CONFIG_POSIX_MQUEUE perhaps?

Regards,
Randy Krakora

On Oct 11, 2013, at 2:13 PM, "Joshua Kurland" <joshua.kurland@adtecdigital.net<mailto:joshua.kurland@adtecdigital.net>> wrote:

How can I enable POSIX message queues for the imx6 wandboard-quad
kernel?  Do I need to add something to my recipe, or is their a
setting in the kernel menuconfig?  My current kernel version is
3.0.35-4.0.0-wandboard+g929768a.

Thanks for the help
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Re: POSIX message queue does not exist?

[Joshua Kurland]

I have posix mqueue enabled in the defconfig file in
source/meta-fsl-arm/recipes-kernel/linux/linux-imx-3.0.35/mx6q

 CONFIG_POSIX_MQUEUE=y
 CONFIG_POSIX_MQUEUE_SYSCTL=y

I used menuconfig to set the posix mqflags (bitbake -c menuconfig
linux-imx), the copied the .config from
tmp/work/wandboard_quad-poky-linux-gnueabi/linux-imx/3.0.35-r37.14/git
to the defconfig file mentioned above.  I then ran bitbake -c
cleansstate linux-imx followed by bitbake myBuild.  After I loaded the
image onto an SD card and booted the board, I used mq_overview to see
if posix message queue had been added properly (mkdir mqueuetest,
mount -t mqueue none mqueuetest).  It was not found.

Am I missing a step?  My target board is the Wandboard-quad.

On Fri, Oct 11, 2013 at 2:13 PM, Joshua Kurland
<joshua.kurland@adtecdigital.net> wrote:
> How can I enable POSIX message queues for the imx6 wandboard-quad
> kernel?  Do I need to add something to my recipe, or is their a
> setting in the kernel menuconfig?  My current kernel version is
> 3.0.35-4.0.0-wandboard+g929768a.
>
> Thanks for the help

Re: POSIX message queue does not exist?

[Otavio Salvador]

On Mon, Oct 14, 2013 at 4:26 PM, Joshua Kurland
<joshua.kurland@adtecdigital.net> wrote:
> I have posix mqueue enabled in the defconfig file in
> source/meta-fsl-arm/recipes-kernel/linux/linux-imx-3.0.35/mx6q
>
>  CONFIG_POSIX_MQUEUE=y
>  CONFIG_POSIX_MQUEUE_SYSCTL=y
>
> I used menuconfig to set the posix mqflags (bitbake -c menuconfig
> linux-imx), the copied the .config from
> tmp/work/wandboard_quad-poky-linux-gnueabi/linux-imx/3.0.35-r37.14/git
> to the defconfig file mentioned above.  I then ran bitbake -c
> cleansstate linux-imx followed by bitbake myBuild.  After I loaded the
> image onto an SD card and booted the board, I used mq_overview to see
> if posix message queue had been added properly (mkdir mqueuetest,
> mount -t mqueue none mqueuetest).  It was not found.
>
> Am I missing a step?  My target board is the Wandboard-quad.

Yes; you should change the linux-wandboard recipe, not linux-imx.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: POSIX message queue does not exist?

[Joshua Kurland]

I had a feeling you were going to say that.  I just finished my try
with that instead.  So the steps I took were:

bitbake -c menuconfig linux-wandboard
(changed kernel stuff)
cp .config meta-fsl-arm/recipes-kernel/linux/linux-imx-3.0.35/mx6q/defconfig
bitbake -c cleansstate linux-wandboard
bitbake myBuild

Am I copying the .config to the wrong directory?  Should I have a
linux-wandboard directory somewhere (and if so, where is it)?

On Mon, Oct 14, 2013 at 3:51 PM, Otavio Salvador
<otavio@ossystems.com.br> wrote:
> On Mon, Oct 14, 2013 at 4:26 PM, Joshua Kurland
> <joshua.kurland@adtecdigital.net> wrote:
>> I have posix mqueue enabled in the defconfig file in
>> source/meta-fsl-arm/recipes-kernel/linux/linux-imx-3.0.35/mx6q
>>
>>  CONFIG_POSIX_MQUEUE=y
>>  CONFIG_POSIX_MQUEUE_SYSCTL=y
>>
>> I used menuconfig to set the posix mqflags (bitbake -c menuconfig
>> linux-imx), the copied the .config from
>> tmp/work/wandboard_quad-poky-linux-gnueabi/linux-imx/3.0.35-r37.14/git
>> to the defconfig file mentioned above.  I then ran bitbake -c
>> cleansstate linux-imx followed by bitbake myBuild.  After I loaded the
>> image onto an SD card and booted the board, I used mq_overview to see
>> if posix message queue had been added properly (mkdir mqueuetest,
>> mount -t mqueue none mqueuetest).  It was not found.
>>
>> Am I missing a step?  My target board is the Wandboard-quad.
>
> Yes; you should change the linux-wandboard recipe, not linux-imx.
>
> --
> Otavio Salvador                             O.S. Systems
> http://www.ossystems.com.br        http://code.ossystems.com.br
> Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: POSIX message queue does not exist?

[Otavio Salvador]

On Mon, Oct 14, 2013 at 4:58 PM, Joshua Kurland
<joshua.kurland@adtecdigital.net> wrote:
> I had a feeling you were going to say that.  I just finished my try
> with that instead.  So the steps I took were:
>
> bitbake -c menuconfig linux-wandboard
> (changed kernel stuff)
> cp .config meta-fsl-arm/recipes-kernel/linux/linux-imx-3.0.35/mx6q/defconfig
> bitbake -c cleansstate linux-wandboard
> bitbake myBuild
>
> Am I copying the .config to the wrong directory?  Should I have a
> linux-wandboard directory somewhere (and if so, where is it)?

linux-wandboard is at meta-fsl-arm-extra; please check your tmp/work/
and look for log.do_unpack for your recipe. This will show were it
looks for the defconfig file.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: POSIX message queue does not exist?

[Joshua Kurland]

That would explain it, thank you.

On Mon, Oct 14, 2013 at 4:00 PM, Otavio Salvador
<otavio@ossystems.com.br> wrote:
> On Mon, Oct 14, 2013 at 4:58 PM, Joshua Kurland
> <joshua.kurland@adtecdigital.net> wrote:
>> I had a feeling you were going to say that.  I just finished my try
>> with that instead.  So the steps I took were:
>>
>> bitbake -c menuconfig linux-wandboard
>> (changed kernel stuff)
>> cp .config meta-fsl-arm/recipes-kernel/linux/linux-imx-3.0.35/mx6q/defconfig
>> bitbake -c cleansstate linux-wandboard
>> bitbake myBuild
>>
>> Am I copying the .config to the wrong directory?  Should I have a
>> linux-wandboard directory somewhere (and if so, where is it)?
>
> linux-wandboard is at meta-fsl-arm-extra; please check your tmp/work/
> and look for log.do_unpack for your recipe. This will show were it
> looks for the defconfig file.
>
> --
> Otavio Salvador                             O.S. Systems
> http://www.ossystems.com.br        http://code.ossystems.com.br
> Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: POSIX message queue does not exist?

[John Weber]

Nice catch Otavio.

Also, a slightly better workflow (as opposed to directly modifying the defconfig 
in the metadata) might be:
bitbake virtual/kernel -c cleansstate
bitbake virtual/kernel -c configure  (unpack, patch, configure, etc.)
bitbake virtual/kernel -c menuconfig  (make your changes to the kernel config here)
bitbake virtual/kernel (build the kernel)

This allows you to configure the kernel with the correct defconfig, then modify 
that using the menuconfig (which takes care of any dependencies).  You can hack 
away at that until you get it right (just don't bitbake clean it or your changes 
will be wiped out).

When you're done reconfiguring:
bitbake virtual/kernel -c devshell  -> takes you to the kernel source tree
unset LDFLAGS
make savedefconfig  -> creates a reduced form of the defconfig
cp defconfig 
fsl-community-bsp/sources/meta-fsl-arm-extra/recipes-kernel/linux/linux-wandboard-3.0.35

John


On 10/14/13 2:51 PM, Otavio Salvador wrote:
> On Mon, Oct 14, 2013 at 4:26 PM, Joshua Kurland
> <joshua.kurland@adtecdigital.net> wrote:
>> I have posix mqueue enabled in the defconfig file in
>> source/meta-fsl-arm/recipes-kernel/linux/linux-imx-3.0.35/mx6q
>>
>>   CONFIG_POSIX_MQUEUE=y
>>   CONFIG_POSIX_MQUEUE_SYSCTL=y
>>
>> I used menuconfig to set the posix mqflags (bitbake -c menuconfig
>> linux-imx), the copied the .config from
>> tmp/work/wandboard_quad-poky-linux-gnueabi/linux-imx/3.0.35-r37.14/git
>> to the defconfig file mentioned above.  I then ran bitbake -c
>> cleansstate linux-imx followed by bitbake myBuild.  After I loaded the
>> image onto an SD card and booted the board, I used mq_overview to see
>> if posix message queue had been added properly (mkdir mqueuetest,
>> mount -t mqueue none mqueuetest).  It was not found.
>>
>> Am I missing a step?  My target board is the Wandboard-quad.
> Yes; you should change the linux-wandboard recipe, not linux-imx.
>